conservationist vs environmentalist

conservationist and environmentalist both are nouns.

Word	Noun	Adjective	Verb	Adverb
conservationist	Yes	No	No	No
environmentalist	Yes	No	No	No

As nouns, conservationist and environmentalist are synonyms defined as:

conservationist and environmentalist: someone who works to protect the environment from destruction or pollution

conservationist (noun)	environmentalist (noun)
someone who works to protect the environment from destruction or pollution	someone who works to protect the environment from destruction or pollution